nx.bit does not resolve (NXDOMAIN)

[pysiak]

dig nx.bit @X.X.X.X -p 5333

produces:

; <<>> DiG 9.9.5-4~bpo70+1-Debian <<>> nx.bit @X.X.X.X -p 5333
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 44468
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;nx.bit.                                IN      A

;; Query time: 8 msec
;; SERVER: 178.216.201.222#5333(178.216.201.222)
;; WHEN: Mon Jul 06 23:55:29 CEST 2015
;; MSG SIZE  rcvd: 24

DNSChain log:

2015-07-06T21:55:29.021Z - debug: [DNS] creating bottleneck on: dns-X.X.X.X-nx.bit (dns.coffee:75)
2015-07-06T21:55:29.023Z - debug: [DNS] received question
{ name: 'nx.bit',
  type: 1,
  class: 1 }
2015-07-06T21:55:29.023Z - debug: [DNS] resolving via namecoin... (<callback> dns.coffee:148)
{ domain: 'nx.bit',
  q:
   { name: 'nx.bit',
     type: 1,
     class: 1 } }
2015-07-06T21:55:29.024Z - debug: [NMC] namecoin resolve (<resources> namecoin.coffee:77)
{ property: 'd/nx' }
2015-07-06T21:55:29.026Z - debug: [DNS] namecoin resolved query (dns.coffee:161)
{ q:
   { name: 'nx.bit',
     type: 1,
     class: 1 },
  d: 'nx.bit',
  result:
   { version: '0.0.1',
     header: { datastore: 'namecoin' },
     data:
      { name: 'd/nx',
        value: { map: { '': '178.248.244.15' } },
        txid: '1cdfbc05519e3df9f216ee027edfeda7e13b59977adff1785b2fc1494b917d9e',
        address: 'NAPZsSwA4eLnWaJxrwu6KmHgTtxJVkdo8s',
        expires_in: 9456 } } }
2015-07-06T21:55:29.027Z - debug: [NMC] A handler for namecoin (<BlockchainResolver> blockchain.coffee:149)
2015-07-06T21:55:29.028Z - warn: [NMC] no useful data from nmc_show (<BlockchainResolver> blockchain.coffee:243)
{ q:
   { name: 'nx.bit',
     type: 1,
     class: 1 } }
2015-07-06T21:55:29.028Z - debug: [DNS]  (<sendErr> dns.coffee:269)
{ code: 3, name: 'NOTFOUND' }

[taoeffect]

Duplicate #4.